In many ways, the 2012 presidential election is a referendum on a number: the nation's unemployment rate of 7.9 percent. Reporters in Oklahoma City (unemployment around 5 percent) and San Bernardino, Calif., (unemployment pushing 12 percent) look behind the numbers.

Virginia is a state both presidential candidates are hoping to win come November. One of the "swingiest" parts of the state is Loudoun County, where a government contractor is ready to put his job on the line to get the nation back on track.